BC 16,0,0(PC)                   // BC $16, CR0LT, 0(PC) // 42000000
	BDNZ 0(PC)                      // 42000000
	BDZ 0(PC)                       // 42400000
	BC 18,0,0(PC)                   // BC $18, CR0LT, 0(PC) // 42400000

	// Verify the supported forms of bcclr[l]
	BC $20,CR0LT,$1,LR              // 4e800820
	BC $20,CR0LT,$0,LR              // 4e800020
	BC $20,CR0LT,LR                 // 4e800020

Você teria **um único objeto `engine`** para todo o seu código se conectar ao mesmo banco de dados.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[14:18] hl[14:15,17:18] *}

Usar `check_same_thread=False` permite que o FastAPI use o mesmo banco de dados SQLite em diferentes threads. Isso é necessário, pois **uma única requisição** pode usar **mais de uma thread** (por exemplo, em dependências).

     means any form of the work other than Source Code Form.

1.7. “Larger Work”

     means a work that combines Covered Software with other material, in a separate
     file or files, that is not Covered Software.

1.8. “License”

     means this document.

1.9. “Licensable”

     means having the right to grant, to the maximum extent possible, whether at the

		}
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z *xlMetaV2Object) EncodeMsg(en *msgp.Writer) (err error) {
	// check for omitted fields
	zb0001Len := uint32(18)
	var zb0001Mask uint32 /* 18 bits */
	_ = zb0001Mask
	if z.PartIndices == nil {
		zb0001Len--
		zb0001Mask |= 0x2000
	}
	// variable map header, size zb0001Len
	err = en.WriteMapHeader(zb0001Len)

		}
	}
	o = bts
	return
}

// Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message
func (z *ListObjectsV2Info) Msgsize() (s int) {
	s = 1 + 12 + msgp.BoolSize + 18 + msgp.StringPrefixSize + len(z.ContinuationToken) + 22 + msgp.StringPrefixSize + len(z.NextContinuationToken) + 8 + msgp.ArrayHeaderSize
	for za0001 := range z.Objects {
		s += z.Objects[za0001].Msgsize()
	}

pkg crypto, const BLAKE2b_256 = 17
pkg crypto, const BLAKE2b_256 Hash
pkg crypto, const BLAKE2b_384 = 18
pkg crypto, const BLAKE2b_384 Hash
pkg crypto, const BLAKE2b_512 = 19
pkg crypto, const BLAKE2b_512 Hash
pkg crypto, const BLAKE2s_256 = 16
pkg crypto, const BLAKE2s_256 Hash
pkg crypto/x509, type Certificate struct, ExcludedDNSDomains []string
pkg database/sql, method (*Conn) BeginTx(context.Context, *TxOptions) (*Tx, error)

이 매개변수를 사용하는 클라이언트가 있기 때문에 한동안은 남겨둬야 하지만, <abbr title="구식이며, 사용하지 않는 것을 추천">사용되지 않는다(deprecated)</abbr>고 확실하게 문서에서 보여주고 싶습니다.

그렇다면 `deprecated=True` 매개변수를 `Query`로 전달합니다:

```Python hl_lines="18"
{!../../docs_src/query_params_str_validations/tutorial010.py!}
```

문서가 아래와 같이 보일겁니다:

<img src="/img/tutorial/query-params-str-validations/image01.png">

## 요약

매개변수에 검증과 메타데이터를 추가 선언할 수 있습니다.

```

## 任意の`dict`を持つレスポンス

また、Pydanticモデルを使用せずに、キーと値の型だけを定義した任意の`dict`を使ってレスポンスを宣言することもできます。

これは、有効なフィールド・属性名（Pydanticモデルに必要なもの）を事前に知らない場合に便利です。

この場合、`typing.Dict`を使用することができます:

```Python hl_lines="1 8"
{!../../docs_src/extra_models/tutorial005.py!}
```

## まとめ

複数のPydanticモデルを使用し、ケースごとに自由に継承します。

//// tab | Python 3.10+

```Python hl_lines="16"
{!> ../../docs_src/response_model/tutorial002_py310.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="18"
{!> ../../docs_src/response_model/tutorial002.py!}
```

////

Now, whenever a browser is creating a user with a password, the API will return the same password in the response.

		t.Skip()
	}

	// TiDB can't change column constraint and has auto_random feature
	type ColumnStruct struct {
		ID    int `gorm:"primarykey;default:auto_random()"`
		Name  string
		Age   int    `gorm:"default:18;comment:my age"`
		Code  string `gorm:"unique;comment:my code;"`
		Code2 string
		Code3 string `gorm:"unique"`
	}

	DB.Migrator().DropTable(&ColumnStruct{})